Pros
I came to Slalom from one of the really-big consulting firms, and couldn't be more happy. This feels like a place that people come when they've realized they love consulting and don't want the work/life-balance associated with the big firms.
The people here are phenomenal - experienced, hard-working, and love living life. The work is good, going home every day is great, and working with phenomenal people is the icing on the cake.
Cons
There's an adjustment period coming from a company with hundreds-of-thousands of people to Slalom, but you'll get past it and realize how much better your life is quickly. Great place to be!